INFRARED THERMOMETER

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NON-CONTACT INFRARED DIGITAL
      THERMOMETER

           IRT12


  OPERATION MANUAL
                 TABLE OF CONTENTS

INTRODUCTION & CAUTION               1

FEATRUES                             2

HOW IT WORKS                         3

FIELD OF VIEW                        3

DISTANCE & SPOT SIZE                     4

INDICATOR                            5

SET ALARM AND EMISSIVITY              7

SET LASER AND LCD BACKLIGHT           8

EMISSIVITY                           9

STORAGE & CLEANING                    9

REMINDERS                            10

SPECIFICATIONS                       10

BATTERY REPLACEMENT                  12

DISPOSAL                             12
                INTRODUCTION

The non-contact infrared thermometer is
designed to measure the surface or skin
temperature of a target where conventional
contact thermometers are inappropriate to use.
For example: a moving object, surfaces with live
voltage or hard to reach objects in harsh
environments.

                LASER CAUTION

  Use extreme caution while laser beam is on.


    Don not aim laser directly into eyes.

    Do not reflect laser from a reflective surface
    into your eyes

    Do not expose the beam to flammable or
    explosive gas.
Features
High and low alarm
MAX, MIN and AVG temperature displays
Data hold
Auto power off
LCD backlight
Selectable °C or °F units
Emissivity adjustable from 0.10 to 1.00
Built-in laser pointer
Low battery indication


Applications
Electrical and Mechanical
Professional Auto
Equipments Maintenance
Marine Engines
HVAC/R
Diesel, Transportations Facility




                         2
How it works

Infrared thermometers measure the surface
temperature of an object. The unit’s optics
senses emitted, reflected, and transmitted
energy, which is collected and focused onto a
detector. The unit’s electronics converts the
information into a temperature reading, which
is display on the unit. In unit that comes with a
laser pointer, the laser serves only for aiming
purposes.

Field of view

Make sure that the target is larger than the
unit’s spot size. The smaller the target, the
closer you should aim to the target. When
accuracy is critical, make sure the target is at
least twice as larger as the spot size.




                          3
Distance & Spot Size

As the distance (D) from the object increases,
the spot size (S) of the area measured by unit
becomes larger. The relationship between
distance and spot size for each unit is listed
below.




Locating a Hot Spot

To find a hot spot, aim the thermometer outside
the area of interest, and then scan across with
an up and down motion until you located hot
spot.




                        4
      Front panel legend




Indicator




                       5
1 Battery symbol
2 Measuring symbol
3 Data hold
4 Laser
5 High alarm symbol
6 Low alarm symbol
7 °C / °F symbol
8 Current temperature value
9 Low alarm function
10 High alarm function
11 Emissivity function
12 Maximum function
13 Average function
14 Minimum function
15 Function value

                  Buttons
MODE button functions
The infrared thermometer measures the
Maximiun (MAX), Minimum (MIN) and Average
temperature each time you take a reading. This
data is stored and can be recalled with the
MODE key until a new measurement is taken.
When the trigger is pulled again, the unit will
begin measuring in the last mode selected.

                        6
Pressing the MODE button also allows you to
access the High Alarm (HAL), low Alarm (LAL),
And show Emissivity (EMIS) data. Each time you
press the MODE, you can move to next function.


Setting the High Alarm, Low Alarm, and
Emissivity
 To set value for the Emissivity (EMIS), press the
Emis key, then press the Up key or Down key to
set the emissivity, then press the Emis key again
to confirm it. The emissivity can be changed
from 0.10 to 1.00.
   To set values for the High Alarm (HAL) and the
Low Alarm (LAL), press the Mode key to choose
the HAL or LAL, then press the Up and Down key
to set the value, then press the Mode key to
confirm it.




                         7
Laser and Backlight setting
 First hold on the trigger key and press the Up
key for backlight function ON/OFF.
 First hold the trigger key and press Down key
for laser function ON/OFF.


LCD Alarm Indication
H or L is displayed when the object temperature
is outside of the setting of HAL or LAL.
AL or AH is displayed when the ambient
temperature is lower than 0°C (32°F) or higher
than 40°C (104°F).
OL or OH is displayed when the object
temperature is outside of the thermometer
temperature range.




                          8
Emissivity

  Emissivity is a term used to describe the
energy-emitting characteristics of materials.
About 90% of organic materials and painted or
oxidized surfaces have an emissivity of 0.95,
which is pre-set in the unit. Inaccurate readings
will result from measuring shiny or polished
metal surfaces. To compensate, cover the
surface to be measured with masking tape or
flat black paint. Allow the tape to reach the
same temperature as the material and measure
the compensated area.

             STORAGE & CLEANING

   The sensor lens is the most delicate part of
the unit. It should be kept clean at all times,
using only a soft cloth or cotton swab with water
or medical alcohol. Allow the lens to fully dry
before use.

     Do not submerge any part of the
      thermometer.

     The thermometer should be stored at
      room temperatures between 1 ~ 149 °F
      (-20 ~ 65°C)
                         9
                   REMINDERS

Not recommended for use in measuring shiny or
polished metal surface (stainless steel,
aluminum, etc.).

The unit cannot measure through transparent
surface such as glass. It will measure the
surface temperature of the glass instead.

Steam, dust, smoke, or other particles can
prevent accurate measurements by obstructing
the unit’s optics.



               SPECIFICATIONS

Temperature range: -50 ~ 600 ℃ (-58 ~ 1112
℉)
Distance to spot ratio: 12:1
Accuracy: +/- 1 ℃ ( 1.8 ℉) (from 10 to 100 ℃),
+/-2% of reading
Response time: 1 second
Spectral response: 8 ~ 14μm
Emissivity: adjustable from 0.10 to 1.00
                        10
Resolution: 0.1 ℃ / ℉
Over range indication: <-50 ℃ LCD show
‘OL’, >600 ℃ LCD show ‘OH’
Over operating temperature indication: ambient
temperature <0 ℃ LCD show ‘AL’, >40 ℃ LCD
show ‘AH’
High and low alarm indication:          target
temperature higher LCD show H, lower LCD
show L
Operating temperature: 0 ~ 40 ℃ ( 32 ~ 104℉)
Storage temperature: -20 ~ 65 ℃ ( -4 ~ 149℉)
Relative humidity: 10% ~ 90 % RH non
condensing operating, <80% RH storage
Power: 9V
Size: 95*44*195mm
Weight: 200g (including battery)


            ATTERY REPLACEMENT

The thermometer incorporates visual low
battery indication as following:

                        11
             Battery sign will be shown when
     turning on the thermometer. If the battery
     is good, the sign will disappear after 3
     seconds. If the battery sign is flashing, the
     battery has low power and will need
     replacement.

NOTE: It is important to power off the unit
before replacing the battery or it will
malfunction. Dispose of the used battery
promptly and keep away from children.

      DISPOSAL OF THIS THERMOMETER

If you at some point intend to dispose of this
unit, please keep in mind that many of its
components consist of valuable
materials, which can be
recycled.

Please don’t discharge it in the
garbage bin, but check your
local community for recycling
facilities.




                        12
TABLE OF APPROXIMATE EMISSIVITY

Aluminum *          0.30        Lead *       0.50
Asbestos            0.95        Limestone    0.98

Asphalt             0.95        Oil          0.94

Basalt              0.70        Paint        0.93

Brass*              0.50        Paper        0.95

Brick               0.90        Plastic **   0.95
Carbon              0.85        Rubber       0.95

Ceramic             0.95        Sand         0.90

Concrete            0.95        Skin         0.98

Copper *            0.95        Snow         0.90
Dirt                0.94        Steel *      0.80

Frozen Food         0.90        Textiles     0.94
Hot Food            0.93        Water        0.93

Glass (plate)       0.85        Wood ***     0.94

Ice                 0.98
Iron *              0.70
*        oxidized
**       opaque, over 20 mils
***      natural
                           13
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